MedlinePlus.gov en Twitter: "RT @US_FDA: According to @CDCgov, US seasonal flu activity increased slightly last week, but remains low. Before flu season hits harder, it…" / Twitter

MedlinePlus.gov en Twitter: "RT @US_FDA: According to @CDCgov, US seasonal flu activity increased slightly last week, but remains low. Before flu season hits harder, it…" / Twitter

RT

@US_FDA

: According to

@CDCgov

, US seasonal flu activity increased slightly last week, but remains low. Before flu season hits harder, it…